MCQ Single Best Answer Not Set

QPick the appropriate portion from the list below to determine whether the variable "a" does not equal "NULL":

ID: #4840 Basic JavaScript MCQ 170 views
Question Info
#4840Q ID
Not SetDifficulty
Basic JavaScript MCQTopic

Choose the Best Option

Click any option to instantly check if you're correct.

  • A if(a!==null)
  • B if (a!)
  • C if(a!null)
  • D if(a!=null)
Correct Answer: Option A

Explanation

The == operator is known as the abstract equality operator in JavaScript, and it is used to test whether two values are equal.
The operator converts the operands to the same type before making the comparison, so it can return true even if the operands have different types.
For example:

console.log(1 == 1); // Output: true
console.log('1' == 1); // Output: true

In the first example, the == operator returns true because both operands are equal and have the same type (number).
In the second example, the == operator returns true because although the operands have different types (string and number),
they are equal in value after being converted to the same type.
The != operator, on the other hand, is the non-equality operator. It tests whether two values are not equal,
and it returns true if the values are not equal or their types are not the same.
For example:

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